367. We can accept your order on condition that payment is made in advance.

英语四级译文:
如果你能提前付款，我们就可以接受你的订单。

四级词汇讲解:
on condition that...意为“在……条件下;如果”，含义与if类似。如:

I will go there on condition that you would like to go with me. (=I will go there if you would like to go with me.)如果你跟我一起，我就去那儿。

短语in advance意为“事先，预先”。

英语四级考点归纳:

※ 表示“在……条件下”的表达还有under the circumstances that...。如:
Under the circumstances that the salary offered was too low，he felt unable to accept the job.薪金太低，他觉得无法接受这份工作。

※ 与circumstances相关的一个重要表达是under no circumstances...，表示“无论如何都不…”，通常置于句首，且句子使用倒装形式。如:
Under no circumstances should you lend him any money.你无论如何都不该把钱借给他。